Heating geometric measure equipment

ABSTRACT

A heating geometric measure equipment ( 10 ) for measuring geometric tolerance of a sample ( 60 ) under heating atmosphere. The measure equipment ( 10 ) includes a temperature controlling case ( 30 ) and an optical sensor ( 20 ). The case ( 30 ) includes a base ( 40 ) and a cover ( 50 ) having a window ( 500 ) clipped on the case ( 30 ). The case ( 30 ) has a supporting section ( 41 ) defining a convective chamber therein and a partition ( 44 ) on the supporting section ( 41 ). The partition ( 44 ) and the cover ( 50 ) jointly define a heating chamber ( 49 ). A vent ( 402 ) communicating with the heating chamber ( 49 ) and the convective chamber ( 42 ) is defined on the partition ( 400 ). A sample carrier ( 46 ) having a datum plane ( 462 ) on an upper surface thereof is provided above the vent ( 402 ). A number of air tubes ( 48 ) are set around the sample carrier ( 46 ) with openings facing the sample carrier ( 46 ). The sensor ( 20 ) is horizontally movable above the cover ( 60 ) of the case ( 30 ). Incident beams ( 200, 202, 204 ) from the sensor are projected on the datum plane ( 462  and the sample ( 46 ) via the window ( 500 ). Reflex beams ( 201, 203, 205 ) are reflected from the datum plane ( 462 ) and the sample ( 60 ). The geometric tolerance can be measured by analyzing the incident beams ( 200, 202, 204 ) and the reflex beams ( 201, 203, 20 ).

BACKGROUND OF THE INVENTION

1 . Field of the Invention

This invention generally relates to the art of heating geometric measure equipment for measuring geometric tolerance of a sample under heating atmosphere.

2 . Background of the Invention

Heating geometric measure equipments are widely used in measure filed for getting a variance of tolerance and dimension of a sample under a varying temperature. A heating geometric measure usually comprises a temperature controlling case and an optical sensor able to emitting detecting beams. In practical detection, the temperature case controls temperature variation curve, for example a temperature variation curve of the surface mounting technology process by operating a temperature controlling unit and a compressed gas controlling unit for imitating a temperature situation requested by the sample to be detected. The incident beams emitted by the optical sensor are projected on the datum plane and the sample via a window of the temperature controlling case. Reflex beams are reflected from the datum plane and the sample. The geometric tolerance can be measured by analyzing the incident beams and the reflex beams.

Please referring to Relative references: Japan published patent application JP 2002-107116A and JP 2003-307412A.

Said heating geometric measure equipment comprises a temperature controlling case and an optical sensor arranged below the temperature controlling case. The temperature controlling case comprises a base, a cover mounted on the base a heat-resisting window for arranging the sample thereon, and the window defines a datum plane for supporting the sample. The cover is connected with a blowing-in pipe, the compressed gas from blowing-in pipe heated by the infrared lamp received in the cover is spouting out therefrom. When the cover is in a closed state, the hot blast or cold blast from the nozzle blew towards the sample through the sidewalls of the base. The geometric measure of the sample can be measured by detecting the beams projected on the sample and the datum plane.

However, said heating geometric measure equipment lies in following problems: firstly, when the temperature controlling case is heated, the hot blast from the nozzle blew to the sample via the sidewalls of the base, not directly; secondly, when the temperature of the temperature controlling case is dropped, the clod blast directly blew sample, not passing the sidewalls of the base, and further absorb remaining heat of the infrared lamp. So during the whole imitating process of the temperature situation, the temperature controlling case do not provide quick variety of temperature which decrease the accuracy of the imitating temperature situation.

In addition, in abovementioned heating geometric measure equipment, devices used for detection have to be disposed under the sample, and the sensor is arranged under the temperature controlling case which make the heating geometric measure equipment not easy carry and mate with the detecting device, therefore the equipment has a limit detecting scope, not able to detect the coefficient of heat expansion and shape distortion. The present invention is directed to solving these problems.

SUMMARY OF THE INVENTION

An object, therefore, of the invention is to provide a new and improved heating geometric measure equipment providing a quick temperature variety to realize curacy imitation of real temperature curve.

In the exemplary embodiment of the invention, a geometric measure equipment for detecting the variety of temperature and dimension of the heated sample comprises a temperature controlling case, an optical sensor located under the temperature controlling. The temperature controlling case comprise a base and a cover mounted on the cover, the base comprises an carrier with an unenclosed convective chamber, a number of partitions attached on the carrier, the carrier and the cover cooperatively form a heating chamber, the partition defines a number of exhaust hole through the convective chamber and heating chamber and a sample carrier sandwiched by the partitions. The carrier defines a datum plane for supporting the sample thereon and a plurality of blowing-in pipes along the vent direction. The cover defines a heat-proof window on a center thereof, the sensor can move relative to the cover, the beams emitted from the sensor pass through the window and project on the datum plane and the sample on the datum plane, so the geometric tolerance and the dimension variety can be attained by detecting the beams reflected from datum plane and the sample on the datum plane.

As disclosed herein, the equipment defines a number of blowing-in pipes on outer flank of the sample carrier along a direction of the wind gap. So the hot or cold blast directly blew on the sample on the carrier, which enhance the speed of the temperature variety and attain a accurate imitation to the real temperature curve.

As an improvement of the invention, the equipment further defines a partition between the temperature controlling case and the blowing-in pipes for perfecting the temperature distribution of the temperature controlling case.

As another improvement of the invention, height of the blowing-out opening of the blowing-in pipe can be adjusted for being convenient to sample with different dimension to be detected.

As an improvement of the invention, the equipment further defines a number detachable sensors for simplifying the carry problems of the temperature controlling case and engagement with other detections.

As another improvement of the invention, the cover and the partition are made of heat-proof materials for getting a quick temperature variety of the temperature controlling case.

Other objects, features and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The features of this invention which are believed to be novel are set forth with particularity in the appended claims. The invention, together with its objects and the advantages thereof, may be best understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals identify like elements in the figures and in which:

FIG. 1 is a perspective view of a heating geometric measure equipment embodying the concepts of the invention;

FIG. 2 is an isometric perspective view of beams path perspective the incidence beams project on the sample and the datum plane, shown in the heating geometric measure equipment in FIG. 1;

FIG. 3 is an isometric perspective view of the heating geometric measure equipment, wherein the cover of the temperature controlling case is open;

FIG. 4 is an isometric perspective view of the heating geometric measure equipment, wherein the cover of the temperature controlling case is closed;

FIG. 5 is another isometric perspective view of the heating geometric measure equipment shown in FIG. 4, wherein the cover and sidewalls of the base are detached;

FIG. 6 is an isometric perspective view of the heating geometric measure equipment shown in FIG. 5, wherein the carrier is detached from the temperature controlling case;

FIG. 7 is a side view of the heating geometric measure equipment shown in FIG. 5,

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1-7 in greater detail, a heating geometric measure equipment 10 in correspondence with the embodiment of the invention for detecting geometric tolerance and dimension variety of the sample to be detected in some temperature comprises a temperature controlling case 30 and a sensor disposed above the temperature controlling case 30.

Referring to FIGS. 3-7, the temperature controlling case 30 includes a base 40 and a cover 50 pivotally mounted on the base 40. The cover 50 can rotate about the base 40 from a closed position and an open position. The base 40 comprises a hollow carrier 41 and a partition 44 disposed in a top end of the carrier 41. The carrier 41 defines a number of sidewalls 400 with a vent 402. The sidewalls 400 and the partition 44 cooperatively form a convective chamber 42 communicating with outside via the vent 402, so the convective chamber 42 is an unenclosed room. In other embodiments of the invention, the sidewalls 400 can define a plurality of fans for improving the air circulation in line of the varieties of the temperature situation.

Specially referring to FIGS. 5-7, the partition 44 is made of heat-proof material and covers above a top end of the carrier 41. When the cover 50 of the temperature controlling case 10 is rotated to the close position, the partition 44 and the cover 50 cooperatively form a heating chamber 49. The partition 44 defines a blowing-out opening 440 and a sample carrier 46 supported by a number of supporting pins 460. The carrier 46 defines a datum plane 462 with a smooth surface for supporting the sample 60. The datum plane 462 can provide a measuring datum 462 for the geometric tolerance and the dimension varieties of the sample 60 to be detected. The carrier 46 defines a number of blowing-in pipes 48 on two opposite sides thereof and the height of the pipes 48 can be altered in line of height of the carrier 46 and the dimension of the sample 60. The blowing-in pipe 48 receives a heating resistance wire whose heating power can be altered via the temperature controlling unit according to demand. The blowing-in pipes 48 further define a number of blowing-out openings 480 connecting with the compressed gas-controlling unit. The gas flowing from the blowing-out opening 480 varies in light of predetermined temperature curve by controlling the heating power of the heating resistance wire and current capacity of the blowing-out opening 480. In others embodiments of the invention, the carrier 46 can arrange a number symmetric blowing-in pipes 48 therearound for getting a rapidly varying speed of the temperature.

The equipment 10 further defines a burbling plate 464 between the blowing-in openings 480 of the blowing-in pipes 48 and the burbling plate 464 extending vertically along the datum plane 462 of the carrier 46, the burbling plate 464 defines a plurality of through holes 4640 and can be arranged with the carrier 46 by an integrated molding art or separately molding. The burbling plate 464 not only changes direction of the air blowing out from the opening 480, but also improves a temperature distribution of the heating chamber 49.

Referring to FIGS. 2 and 5, the cover 50 is made of heat-proof material and comprises a heat-proof window 500 attached on a top end thereof. The heat-proof window 500 not only permits the incidence beams 200, 202, 204 and reflected beams 201, 203, 205 launched by the sensor 20 through but also simplifies observing process of the sample 60. The cover 50 defines a temperature sensor adjacent to a top portion thereof, so the equipment 10 can alter the compressed air capability loaded in and heating power of the heating resistance wire via the temperature detected by the temperature sensor.

Referring to FIGS. 1-2, the optical sensor 20 is located below the temperature controlling case 30 and can move relative to the cover 50 along a plane parallel to the cover 50. Incidence and reflected beams 200, 202, 204, 201, 203, 205 launched by the sensor 20 passing through the cover 50 and projecting on the datum plane 462 and the sample 60 and reflected by the datum plane 462 and the sample 60 from reflected beams 201, 203, 205. Distance between detecting points and the datum plane 462 can be detected by analyzing the incidence beams 200, 202, 204 and reflected beams 201, 203, 205 so that the geometric tolerance and the dimension varieties of the sample 60 can be detected.

Referring to FIGS. 3-4, in use, the cover 50 of the temperature controlling case 30 is firstly rotated to an open position. Successively, the sample 60 to be detected is arranged on the carrier 46 by a predetermined means. And then the blowing-in opening 480 is altered to a preferred height in light of the real dimension of the sample 60.

Referring to FIGS. 1-2, when the temperature controlling case 30 received the sample 60 to be tested is mounted under the sensor 20, the compressed air controlling unit and temperature controlling case 30 cooperatively realize the heating up curve or temperature reduction curve requested. During the heating or cooling process, the incidence beams 200, 202, 204 emitted by the sensor 20 pass through the window 500 and project on the datum plane 462 and the sample 60. Then, reflex beams 201, 203, 205 are reflected from the datum plane 46 and the sample 60. The geometric tolerance can be measured by analyzing the incident beams 200, 202, 204 and the reflex beams 201, 203, 205.

FIG. 1 is illustrating an air flow distribution of the temperature controlling case 30 of the heating geometric measure equipment 10 in the invention. The air flow flowing out from the blowing-in pipes 480 is distributed into two parts in two different direction, wherein one part of the flow pass through the through opening 4640 of the burbling plate 464 and then blows onto the sample 60, the other part of the flow disturbed by the burbling plate 464 forms into a turbulent flow, then the turbulent flow flows onto the sample 60. The air flow blowing through the sample 60 and then passed through the blowing-out opening 440, the convective chamber 42, and the vent 402 of the base 40 forms a fluently air passageway.

The blowing-in opening 480 of the blowing-in pipes 48 is disposed toward the carrier 46 so that the air flow coming from the blowing-in pipes 48 directly exerts on the sample 60 on the carrier 46. So the sample 60 can be quick heating up or temperature reduction in order to imitating a real temperature situation.

It is necessary to point out that the temperature controlling case 30 can be loaded in hot airs by the heating resistance or cold airs by cutting off the heating resistance, and the hot air and clod air can be controlled to alter the temperature varying curve of the temperature controlling case 30. In addition, the optical sensor 20 can be disposed separately with the temperature controlling case 30 for mating with different detecting devices.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.

While preferred embodiment in accordance with the present invention have been shown and described, equivalent modifications and changes known to persons skilled in the art according to the spirit of the present invention are considered within the scope of the present invention as defined in the appended claims. 

1. A heating geometric measure equipment comprising: a temperature controlling case comprising a base with a unenclosed convective chamber and a cover mounted on the base, the base including a carrier and a partition disposed above the carrier, the carrier and the space plat cooperatively forming a heating chamber, the partition defining a number of blowing-out holes and a carrier arranged in a center position of the partition, the carrier defining a datum plane for supporting sample thereon, the carrier defining a number of blowing-in pipes and a window defined in a top end of the cover; an optical sensor located above the temperature controlling case and moveable relative to the cover above the top end of the cover, the incidence beams emitted by sensor pass through the window and project on the datum plane and the sample, then, reflex beams being reflected from the datum plane and the sample, the geometric tolerance being able to be measured by analyzing the incident beams and the reflex beams.
 2. The heating geometric measure equipment as claimed in claim 1, wherein the blowing-in pipes of the temperature controlling case are arranged two opposite sides of the carrier.
 3. The heating geometric measure equipment as claimed in claims 1, furthering comprising a burbling plate disposed between the blowing-in pipes and the carrier.
 4. The heating geometric measure equipment as claimed in claim 3, wherein the burbling plate and the carrier are formed as one-piece.
 5. The heating geometric measure equipment as claimed in claim 1, wherein the number of blowing-in pipes face the carrier
 6. The heating geometric measure equipment as claimed in claim 1, wherein the carrier is supported by a number of supporting pins extending from the partition, the blowing-in pipes is disposed below the carrier.
 7. The heating geometric measure equipment as claimed in claim 1, wherein the temperature controlling case defines at least one fan on the sidewalls thereof.
 8. The heating geometric measure equipment as claimed in claim 1, wherein height of the blowing-in pipes relative to the partition can be altered.
 9. The heating geometric measure equipment as claimed in claim 1, wherein the optical sensor is detachable disposed above on the temperature controlling case.
 10. The heating geometric measure equipment as claimed in claim 1, wherein the cover and the partition are made of heating-proof materials.
 11. A heating geometric measure equipment comprising: a hollow base surrounded by a number of sidewalls, a cover mounted on the base, the base defining a partition dividing the heating geometric measure equipment into a heating chamber and a convective chamber, the partition comprising a number blowing-out holes communicating the heating chamber and the convective chamber, a carrier disposed above the blowing-out holes, the carrier defining a number of blowing-in holes on outsides thereof facing the carrier and a number of blowing-in pipes, the sidewalls defining a number of through openings, the air delivered by the blowing-in pipes passing through blowing-out openings of the carrier, the convective chamber, the temperature controlling device, and thus forming an air flow passageway.
 12. The heating geometric measure equipment as claimed in claim 11, wherein the blowing-in pipes of the temperature controlling case are arranged two opposite sides of the carrier.
 13. The heating geometric measure equipment as claimed in claim 11, wherein the blowing-in pipes are symmetrically arranged around the carrier.
 14. The heating geometric measure equipment as claimed in claim 11, furthering comprising a burbling plate disposed between the blowing-in pipes and the carrier.
 15. The heating geometric measure equipment as claimed in claim 11, wherein the blowing-in pipes of the temperature controlling case are arranged two opposite sides of the carrier.
 16. The heating geometric measure equipment as claimed in claim 11, wherein the burbling plate and the carrier are formed as one-piece.
 17. The heating geometric measure equipment as claimed in claim 11, wherein the carrier is supported by a number of supporting pins extending from the partition, the blowing-in pipes is disposed below the carrier.
 18. The heating geometric measure equipment as claimed in claim 11, wherein the temperature controlling case defines at least one fan on the sidewalls thereof.
 19. The heating geometric measure equipment as claimed in claim 11, wherein height of the blowing-in pipes relative to the partition can be altered.
 20. A heating geometric measure equipment comprising: a hollow base surrounded by a number of sidewalls, a cover mounted on the base, the base defining a partition dividing the heating geometric measure equipment into a heating chamber and a convective chamber, the partition comprising a number of blowing-out holes communicating the heating chamber and the convective chamber, a carrier disposed above the blowing-out holes, the carrier defining a number of blowing-in holes on outsides thereof facing a number of blowing-in pipes, the air delivered by the blowing-in pipes passing through blowing-in openings of the carrier, the heating chamber, the convective chamber, and thus forming an air flow passageway. 